The invention relates to the technical field of railway traffic, in particular to a railway traffic device cabin supporting structure. The railway traffic device cabin supporting structure comprises two apron board supporting frames connected with two oppositely arranged apron boards and at least one connecting rod for connecting the two apron board supporting frames, wherein the tops of the two apron board supporting frames are used for fixing locking parts fixing the apron boards, and the bottoms of the apron board supporting frames are fixedly connected with a base plate assembly. The apronboard supporting frames are provided with cavities for wrapping the ends of the connecting rods so as to fix the connecting rods. The apron board supporting frames and the base plate assembly form astable whole frame structure, the bottoms of the apron boards are hinged to the base plate assembly, rotary opening can be achieved around a hinge point, the structure is closed through the locking parts, the locking parts are fixed to the tops of the apron board supporting frames, the precision accuracy and stability of apron board installation can be ensured, the relative position relation of the two apron board supporting frames is reinforced through a connecting rod, and the structural stability of a whole device cabin is ensured.